Geophysical Analysis for Deeper Groundwater Assets by using Resistivity Survey of Atal Nagar (Naya Raipur),Chhattisgarh, India


K. Panigrahi, Research Scholar, Dr. Bhumika Das, Associate Professor
Mats University Raipur Chhattisgarh, India.


Surface electrical resistivity surveys are focused on the theory that electrical resistivity and distribution of the surrounding soils and rocks depend on the distribution of electrical potential in the ground around a current-carrying electrode. Gradient Resistivity Profiling (GRP- 1 No.s) and Vertical Electrical Sounding (VES – 9 No.s) decipher the sub surface condition at the Nava Raipur District in formation of the time resistivity survey. For the survey, the Aqua Meter CRM-50 resistivity metre was used. Both profiling and sounding mode have been performed for the present analysis. The gradient approach for profiling has been carried out. Both the Schlumberger configuration and half the Schlumberger configuration were used for audio. 200 m (AB) for profiling and 240 m (AB) for sounding were the full spreads. By artificially energizing the subsurface and bringing measurements on the ground surface, electrical resistivity of sub-surface geological formation is calculated using Ohm’s law. The contrast with the surrounding or effective presence (depending on its relative resistivity and thickness) of the resistivity value of an individual layer makes it observable. Raipur district is situated in the centre of the state of Chhattisgarh and is bounded by 81 ° 32’05 ‘& 82 ° 59’05” east longitudes and 19 ° 46 ’35’ & 21 ° 53’00’ north latitudes (fig. 1) falling in the Survey of India topo sheets no 64G/12, G/16, 64H/9 & 64H/13, covering an area of 13446 It is surrounded by the East Durg districts of Odisha State in the west, Bilaspur and Janjgir-Champa districts in the north, Raigarh and Mahasamund districts in the east. Atal Nagar (Naya Raipur) is one of Chhattisgarh’s major townships, located about 17 km SE from the main town of Raipur, covering an area of about 80 square kilometres, or 8,000 hectares. It is located in Toposheet No. 64 G/12 & 64 G/16 between 21.1610 North latitude and 81.787 ⁇ East longitude. It is part of the Chhattisgarh Super group.